Jul 6, 2021 · This works because when concatenating two jsonb values, existing keys will be overwritten. The other way is to use jsonb_set() that updates a value at a location specified through a "path" (which is defined through the elements of an array) update the_table set attr = jsonb_set(attr, array['is_default'], to_jsonb(false));

Apr 19, 2021 · jsonb does not preserve the order of keys (keys are ordered in deterministic fashion internally), so we need not bother about the order of input rows in the aggregation. Except when there can be duplicates, then the latest copy from the input prevails.

Oct 27, 2022 · Remember that jsonb_path_query() returns jsonb objects. If you want the contents of the object (even if it is a primitive type), extract element 0. There is no support for extracting values into anything other than json(b) or text, so you will have to then convert text to whatever numeric type you need.->>0 only works for jsonb primitives ...

Aug 30, 2019 · The structure is just (property_definition_id uuid, product_number text, value jsonb), but for multi-values, there can be multiple tuples with the same property_definition_id and product_number. Perhaps I'll play with the current EAV implementation a bit more to see if it's workable after all, but so far it's proven hard to query.

Mar 19, 2020 · I am looking to extract multiple values from a jsonb column in Postgres, and am running into an issue where some values are coming back null. fiddle Setting up schema: create table jsonb_test (t...

Jan 17, 2024 · jsonb does not preserve white space, does not preserve the order of object keys, and does not keep duplicate object keys. If duplicate keys are specified in the input, only the last value is kept. I have a jsonb column that contains some data. I extract specific key data (which is also json) and hash it using sha256, something like:

Sep 9, 2022 · Thanks a lot! Yes, I did look at the link but I just didn't see this function - I kept scrolling down from that point in the document where the link opened and I did not see this, because it was above : jsonb_path_query_first - This is the info I lacked.

Sep 17, 2022 · When using JSONb for a complex hierarchy of references, is it better to Join by aggregating the IDs in the JSON, or have additional relations table? 0 How to build an efficient EAV model over JSONB in Postgresql

Sep 24, 2020 · Using the jsonb_to_recordset function the json will be flattened without any problem. Now, here comes my effective question, i'm not able to address in order to solve this problem effectively... Suppose that every manufacturer has a nested JSON object that exposes the model and starting price like reported in the following JSON

Nov 24, 2020 · If you want to test if a JSON value contains a specific key/value pair, use @> - but that can only be used with jsonb, so you need to cast the column: SELECT * FROM job_request_table p where data_meta::jsonb @> '{"data_type": "Insurance"}'; You can use this also to check inside the array in source_data (but again a cast to jsonb is neeed):